Wrench-jack for oil-well tubes.



PATENTED JULY 18, 1905? 3.0. MILLER. WRENCH JACK FOR OIL WELL TUBES.

APPLYIOATIQN FILED NOV. 2, 1904.

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UNITED STATES Patented July 18, 1905.

PATENT OFFICE.

WRENCH-JACK FOR OIL-WELL TUBES.

SPECIFICATION forming part of Letters Patent No. 794,945, dated July 18,1905.

Application filed November 2, 1904. Serial No. 231,152.

To (all whmn it may concern.-

Be it known that I, EDWIN O. MILLER, a citizen of the United States,residing at Humboldt, in the county of Allen and State of Kansas, haveinvented a new and useful VVrench- Jack for Oil-VVell Tubes, of whichthe following is a specification.

This invention relates to a wrench for coupling and uncoupling thesections of a drillrod for well boring or drilling apparatus, and hasfor its object to provide an inexpensive, durable, and efficient wrenchof this character by means of which the several sections of rod may beexpeditiously coupled or uncou pled with comparatively slight exertionon the part of the operator.

A further object of the invention is to form the track or rack bar of aplurality of pivoted sections, so that the carriage carrying the movablewrench will automatically adjust itself to the varying distance betweensaid track and the rod-sections to be coupled or uncoupled and alsopermit the sections of track to be conveniently packed for transportation or shipment.

A still further object is to provide a brace which extends from thepivot-pin of the tracksections to the drill-rod, thereby forming a rigidconnection between the rod and the track and effectually preventingaccidental displacement of the latter.

The invention consists in the construction and novel' combination ofparts hereinafter fully described, illustrated in the accompanyingdrawings, and pointed out in the claims hereto appended, it beingunderstood that various changes in form,proportion,and minor details ofconstruction may be resorted to without departing from the principle orsacrificing any of the advantages of this invention.

In the accompanying drawings, forming a part of this specification,Figure 1 is a perspective view of a drill-rod wrench constructed inaccordance with my invention. Fig. 2 is an enlarged detail sectionalview of the pivoted track-sections. Fig. 3 is a side elevation, partlyin section, of the clamp holding the stationary wrench. Fig. 4 is asimilar view of the movable carriage.

Similar numerals of reference indicate corresponding parts in all thefigures of the drawings.

The drill-rod is designated by the numeral 5 and the joint at 6, saidjoint consisting of an internally-threaded concave socket on one sectionof the drill-rod and a similarly-shaped threaded projection on theother, the drill-rod sections or members being squared, as indicated at7, on both sides of the joint to adapt the wrenches 8 and 9 to be fittedaround said squared portions of the drill rods. The wrenches are eachprovided with a solid open jaw at one end, which jaw is shaped andproportioned to fit snugly around the squared portion of the drill-rod,so as to cause said drill-rod to move or turn with the wrench or remainat rest, accordingly as the wrench is moved or held stationary.Supported on the floor or platform of the derrick is a track preferablyformed in two sections 10 and 11, said sections being preferablyI-shaped in cross-section, as shown, and having their adjacent endspivoted together by a rod or pin 12, which passes through alinedopenings formed in said sections and is driven into the floor orplatform, as shown.

The track-section 10 is provided with a series of teeth 13, and slidablymounted in said section is a carriage 14, which operates the movablewrench 9 to turn the members of the screw-joint 6. The carriage 14 isprovided with inwardly-extending lips 15, which engage the upper flangeof the track, and pivoted in said carriage is an operating-lever 16,provided with a pair of depending pawls 17, adapted to successivelyengage the teeth of the track-section and move the carriage forward whenthe lever is operated. Mounted on the track-section 11 is a clampingmember 18, designed to support the shank of the stationary wrench 8,said clamping member being adjustable on the track-section and securedin fixed position by a pin 19, the latter being adapted to engage anyone of a series of openings 20, formed in the upper flange of saidtrack.

Disposed at the juncture of the pivoted track-sections 10 and 11 is arod or brace 21, the opposite ends of which are curved or recessed, asindicated at 21, and adapted to engage the pivotal pin 12 and thedrill-rod, re-. spectively, as clearly shown in Fig. 1 of the drawings.

To couple the sections of drill-rod, the stationary wrench 8 is fittedaround the squared portion of the lower member of the drill-rod and theouter end thereof against the clamping member 18. The movable wrench isthen applied to the squared portion of the opposite rod-section and thecarriage drawn back to the free end of the track-section 10. The lever16 is now rocked backward and forward to successively throw thefeeding-pawls into engagement with the teeth on the track, therebyfeeding the carriage forward with a step-by-step movement. The carriagethus forces the movable wrench 9 toward the stationary wrench 8 andturns one, section of drill-rod so as to couple the screw-joint, andthis operation of turning the wrench and joint by the movement of thecarriage is repeated until the joint has been firmly screwed up. Theclamping member 18 may be readily adjusted longitudinally of the section11, so as to permit the stationary wrench to engage the squared portionof the drill-rod by removing the pin 19 and sliding said member on thetrack to the desired position and replacing the pin.

By having the track formed in two or more sections, pivoted together inthe manner described, the section 10 is free to move laterally as thecarriage moves forward, thereby permitting said carriage toautomatically adjust itself to the varying distance between the trackand the rod-sections caused by the angular disposition of saidtrack-sections.

By having the track made in sections said track may also be quickly setup for use and conveniently packed for transportation or shipment.

Having thus described the invention, what is claimed is 1. In a deviceof the class described, a track formed of a plurality of pivotedsections, a carriage mounted for travel on one of said track-sectionsand adapted to support amovable wrench, and a clampingmember mounted onthe adjacent track-section and adapted to support a stationary wrench.

2. In a device of the class described, a track formed of a plurality ofpivoted sections, a carriage mounted for travel on one of said sectionsand adapted to support a movable wrench, and an adjustable clamping.member mounted on the opposite track-section and adapted to support astationary wrench.

3. In a device of the class described, a track formed of twopivotally-connected sections, teeth formed on one of said sections, acarriage mounted for travel on said section, a pivoted lever carried bythe carriage and provided with a pair of pawls adapted to engage theteeth for reciprocating said carriage, a movable wrench supported by thecarriage, a clamping member mounted on the opposite track-section, and astationary wrench supported by said clamping member.

4:. In a device of the class described, a track formed of twopivotally-connected sections one of which is provided with a series ofteeth and the opposite section with a plurality of openings, a carriagemounted for travel on the toothed section and adapted to support amovable wrench, an adjustable clamping member mounted on the oppositetrack-section and adapted to support a stationary wrench,

and a pin carried by the clamping member and adapted to engage theopenings in said track-section for securing said member in adjustedposition.

5. In an apparatus for coupling and uncoupling drill-rods, thecombination of a track formed in two sections, a pin forming a pivotalconnection between said sections, a carriage mounted for travel on oneof said sections and adapted to support a movable wrench, a clampingmember mounted on the opposite section and adapted to support astationary wrench, and a brace extending between the pivot-pin of saidsections and the drill-rod.

6. In a device of the class described, an angularly-disposed trackformed of two pivotally-connected sections, a carriage mounted fortravel on one of said sections and adapted to support a movable wrench,an adjustable clamping member mounted on the opposite track-section andadapted to support a stationary wrench, and means for securing theclamping member in adjusted position.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two witnesses.

EDWIN O. MILLER.

W'itnesses:

MORRIS PATTON, JAMEs O. SKIDMoRE.

